More on this, I figured the second volume wouldn’t be as discounted as the first but it’s quite silly - what appears to be available on Amazon/Kindle is Miracleman Volume 1 (Parental advisory edition), which collects issues 1-4 of the Marvel floppies - it’s currently $7.70 (though I got it for 3 dollars a few days ago).
Then there’s Miracleman Book 2 (not volume, not Parental Advisory edition), which collects Miracleman 5-10. It’s selling for $17.26.
Then there’s Miracleman Volume 3 (Parental advisory edition), which collects #11-16, and the annual. It’s selling for $9.34.
This is all still quite cheap really, <40 bucks for the whole Moore run (but weird that volume 2 is so much more expensive - it doesn’t have the highest page count). But complicating things is that Miracleman Volume 2 is on Comixology for $9.99 (and volume 3 is $12.99).